... OEM service 3.First class quality 2012 U flat metal bracket :1process cutting,punching,bending,deburring,stamping,welding,pretreatment, ... , iron ( SPCC, SECC, SPTE, tinplate), aluminum alloy, red copper, brass are available.3thickness0.5-15mm4high precision :+/-0.05 ... Materials: carbon steel or stainless steel Surface treatment: powder coating, painting and zinc-plated Main process: bending and ...